Which actions help prevent groundwater erosion? Select three options. planting bushes preserving trees packing down soil building drains with outlets increasing the slopes of riverbanks

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

What must be true for natural selection to heppen

Which of these is not a nucleotide base found in dna?